Hello
The document number for the issue the material (Doc number ..5227) is letter than the reversal (Doc number ...5132). Means you are not comparing the same document. Have a look again.
For the price change, your screen shot of S_P00_07000139 is not clear.
If you share the full screen shot for the transaction for the day, than only we can see the reasons for the change.
Regards
SS